WOW121-Steam - UPGRADE - $39.95 each. Two or more $34.95 each!

Version 4.6 is the latest version including 12 Chuffinity chuff sets. The 4.6 decoders were first produced in April 2022. For a full list of changes between V4.0 and V4.6, please review the WOWSteam V4.6 Changelog.

This upgrade program will update your WOW121-Steam decoder to the latest production version available from TCS. As part of the upgrade process, following this registration you MUST return the decoder to TCS headquarters for updating. See the Shipping Instructions tab for more information.